3com ethernetcard + SCO TCP/IP

[=Ronald van der Pol]

I have some problems with a 3COM 503 Ethernet card. It only
seems to work with SCO UNIX 3.2.0 TCP/IP (Lachmann) when I
use the default IRQ vector of 2. When I try to set the IRQ 
to 5 it doesn't work (e.g. when I install the Unix e3B driver). 
Should I use some additional (MS-DOS??) setup software? 
(there is no interrupt conflict!)

--
		Ronald van der Pol  <rvdp at cs.vu.nl>